Use Symfony5 class names in connectors

#5532

Author: Naktibalda

src/Codeception/Lib/Connector/Guzzle.php

@@ -14,7 +14,7 @@
 use GuzzleHttp\Psr7\Request as Psr7Request;
 use GuzzleHttp\Psr7\Response as Psr7Response;
 use GuzzleHttp\Psr7\Uri as Psr7Uri;
-use Symfony\Component\BrowserKit\Client;
+use Symfony\Component\BrowserKit\AbstractBrowser as Client;
 use Symfony\Component\BrowserKit\Cookie;
 use Symfony\Component\BrowserKit\Request as BrowserKitRequest;
 use Symfony\Component\BrowserKit\Response as BrowserKitResponse;